How do bacteria survive for so long during harsh conditions until finding a host? A. They store up fat and hibernate until conditions improve.
B. They feed each other so that every bacterium has a little food.
C. They have ribosomes where food is made.
D. They form an endospore with thick walls and await better conditions.

i think its b

Explanation:

if i were to guess but im not 100 percent sure

b

explanation:

mitosis

as given the equation is

2al + 6 hcl > 2 alcl3 + 3 h2(g)

as per equation two moles of aluminum reacts with six moles of hcl to give two moles of alcl3 and three moles of hydrogen gas

given: three moles of al are present and 7 moles of hcl

for three moles of aluminum nine moles of hcl will be required

however as 7 moles of hcl are present so the limiting reagent is hcl

hcl is going to decide the number of moles of product formed

when six moles of hcl are present = 3 moles of h2 are formed

when one mole of hcl is present == 3/6 mole sof h2 will be formed

when 7 moles of hcl are present = 3 x 7/ 6 moles of h2 will be formed = 3.5 moles of h2